ML20127B499
| ML20127B499 | |
| Person / Time | |
|---|---|
| Site: | Mcguire |
| Issue date: | 04/26/1985 |
| From: | Tucker H DUKE POWER CO. |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| IEB-84-03, IEB-84-3, NUDOCS 8506210494 | |
| Download: ML20127B499 (2) | |
Text
4 %,
Dunic Powicit Godriwxy 18.0. ISOK lMllfil)
CII AHLOMi!. N.C. Ull212 II AI. II. Ti;rKEli Tr t.r.pnown DN-N Pamesne=3 (70 6) il7;>+%MI '<
g..
i tS:56 i
Dr. J. Nelson Grace, Regional Administrator U. S. Nuc1 car Regulatory Cocuission Region II 101 Marietta Street, NW, Suite 2900 Atlantn, Georgia 30323
Subject:
McGuire Nuc1 car Station Docket No. 50-370
Reference:
RII JLM NRC/01E Inspection Report 50-370/85-07
Dear Dr. Grace:
Picase find attached a response to deviation 50-370/85-07-01 which was identified in the above referenced inspection report.
Very truly yours, k.b.
l$4/
- 11. B. Tucker PBN/mjf Attachment cc:
Mr. W. T. Orders Senior Resident Inspector - NRC McGuire Nuclear Station 0506210494 050426 kg ADOCK0500g0 g
PDR 1E ol
}
DUKE POWER COMPANY McGuire Nuclear Station i
RESPONSE TO NRC/0IE INSPECTION REPORT 50-370/85-07 Deviation 50-370/85-07-01:
In response to IE Bulletin 84-03, Duke Power Company committed to NRC by letter
~
dated November 21, 1984, that the core unloading aal reloading, and the annunci-ator alarm procedures would contain specific act ons operators.will take in event of a refueling water cavity seal failure.-
Contrary to the above, as of February 11, 1985, the : ore unloading and reloading procedure was in draft form and no annunciator or ccmputer alarm pro:edure had been issued to prescribe operator actions as stated in the November 21, 1984, response to IEB 84-03.
Response
For McGuire Unit 1; periodic test procedure (PT) PT/1/A/4550/06 " Total Core i
Unioading", change 13 and PT/1/A/4550/07 " Total Core Reloading", change 17 l
incorporated the necessary limits and precautions. The changes were effective January 24, 1985.
(The first Unit i refueling outage after issuance of NRC l
Bulletin 84-03 did not begin until April 19, 1985).
McGuire Unit 2 had never had a refueling before February 1985 so no approved procedures existed for Core Unioading or Core Reloading. These procedures were in draft form and included limits and precautions concerning the refueling cavity seal failure. The final version of PT/2/A/4500/22, " Total Core Unioading", was approved February 14, 1985 (prior to actual core unloading) with necessary limits and precautions, and PT/2/A/4550/07, " Total Core Reloading" was approved March 15, 1985 (prior to actual core reloading) with necessary limits and precautions.
(The first Unit 2 refueling outage began January 25, 1985 with a projected Cycle 2 criticality date of April 30, 1985).
The annunciator or computer alarm concern will be included in an Abnormal Procedure (AP) to be fimplemented prior :to flooding the cavity (scheduled for May 8,1985) for the current Unit 1 outage and it will include appropriate alarms as symptoms which will address operator actions required for refueling cavity level loss.
The deviation was a result of miscommunication between the station and personnel preparing the bulletin response on the completion status of procedures. This was a unique situation and requires no actions to avoid further deviations.
_-